Cable anchor

Abstract

A cable anchor has ball surfaces that permit misalignment between the cable and a stem of the anchor, and a fitting that permits the introduction of a corrosion inhibitor to the interior of the anchor.

1. In an apparatus for anchoring an end of a cable to a structure, the apparatus having a tubular body with an opening in one end into which the end of a cable may be inserted, a gripper for gripping the end of a cable within the tubular body, a threaded stem mounted to the other end of the body and extending from the body, the stem having an enlarged head that is captured against a facing surface at the other end of the body, the improvement wherein:
 a frusto-spherical surface is formed on at least one of the head of the stem and the facing surface, the frusto-spherical surface permitting the stem to articulate relative to the tubular body so as to allow angular deflection of the stem relative to the body 
 the cable gripper comprises a set of jaws; 
 a fitting in an opening through a side of the tubular body through which a corrosion inhibitor can be introduced into the tubular body. 
 
     
     
       2. The apparatus of  claim 1 , wherein the tubular body has a wedge-shaped bore section and wherein the gripper comprises a set of jaws that collectively have a generally wedge-shaped exterior surface adapted to be moved within and operatively wedged by the tubular body bore section into gripping engagement with a cable end positioned within the jaws. 
     
     
       3. The apparatus of  claim 1 , further comprising a flat surface secured to the stem whereby the stem may be fastened to an insert by wrench engagement of the flat surface. 
     
     
       4. The apparatus of  claim 3 , wherein the insert is set in concrete. 
     
     
       5. The apparatus of  claim 1 , wherein the facing surface is formed on an end cap mounted to the body, the end cap having a hole through which the stem extends and wherein the enlarged head is in rotatable sliding contact with the facing surface of the end cap. 
     
     
       6. The apparatus of  claim 5 , wherein the head of the stem is a convex surface and the facing surface is concave. 
     
     
       7. The apparatus of  claim 6 , wherein the cap is screwed into the body. 
     
     
       8. The apparatus of  claim 1 , further comprising a spring mounted within the body that biases the cable gripper toward a gripping position.